Radiant Linga – Shiva as a column of light, self-manifested as Dwadasha (twelve) Jyotirlinga.
Somanatha, Mallikarjuna, Mahakaleshvara, Omkareshvara, Vaidhyanatha, Bhimashankara, Rameshvara, Nageshvara, Vishvanatha, Tryambakeshvara, Kedareshvara, Ghushneshvara.
Vishnu too manifested himself – in eight Svayam Vyakta Kshetras.
To read about Linga visit
http://hindumythologyforgennext.blogspot.com/2012/03/why-shiva-is-worshiped-as-linga.html
To read about these Jyotirlingas visit
https://shaivam.org/temples-special/12-jyotirlingas-temples-of-lord-shankar